Any ideas?

Any idea what this is? It has been moved about three times and is  therefore very resilient! It quietly got on with it - that is, it is not a plant [bush? tree?] that has been  purchased.

I have never noticed it blossom before and it is a beautiful colour.

You know me, I have all these good intentions to make a record of what I DO purchase and plant, but it sometimes gets lost in the mix.  In my defence, I have labelled a lot of things with tags and permanent marker but naturally the marketing definition of permanent is different to my understanding of the word...!?

​Hence even more confusion on my part.